Which shows that energy is being transformed?
A. A swinging pendulum
B. A ream of paper inside a box
C. A candle resting on a table
D. A glass inside a cabinet​

Answers

Answer 1

Answer:

A

Explanation:

I think it's A, sorry if I'm wrong

Answer 2

Answer:

I think its (A)

Explanation:

correct me if im wrong


Related Questions

A classroom has a volume of 165 m^3. How many moles of gas are in the room if the temperature is 20.0°C and the pressure is 1.00 atm? (Make sure to put P, V, and T in the right units.) (Unit = mol)​

Answers

The number of mole of the gas present in the room given the data is 0.069 mole

Data obtained from the question Volume (V) = 165 m³Temperature (T) = 20 °C = 20 + 273 = 293 KPressure (P) = 1 atm Gas constant (R) = 8.21 m³.L/Kmol Number of mole (n) =?

How to determine the number of mole

The number of mole of the gas present in the room can be obtained by using the ideal gas equation as illustrated below

PV = nRT

n = PV / RT

n = (1 × 165) / ( 8.21 × 293)

n = 0.069 mole

Learn more about ideal gas equation:

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Answer:

6859 moles

Explanation:

n=(PV)/RT=(100000*165)/(8.21*293 Kelvin)=6859 moles

20 deg Celsius is 293 Kelvin

I need help
With this

Answers

Answer:

dfvgxbcjnhmv,kbl

Explanation:

fvgbnhjmk

A coil with 55 loops has its flux change from 0 Wb to 0.0266 Wb in a certain amount of time, generating 5.22 V of EMF. How much time elapsed?

Answers

Answer:

0.280 s

Explanation:

I set it up as 5.22=(55)(0.0266)/x and then solved for x to be 2.80.

compare and contrast current and static electricity plz help.

Answers

Static

Type of electron movement: random

path of electrons: unpredictable

duration flow: short

usefulness: stattionery objects

Current

Type of electron movement: steady in a given direction

Path of electrons: can be directed

Duration of flow: long

Usefulness: can power appliances

Note: This is a few notes I know about it sorry if its not what you are looking for This is all the info I have

1. What are the two main gases responsible for lowering down the pH.
2. Can we control an acid rain? Why or Why not?
3. When pH changes from 6 to 3, how many times does acidity increase?

Answers

Answer:

1. The three main acidic gases responsible for lowering the pH of rainwater are non-metal oxides produced by the burning of fossil fuels like coal, oil and natural gas. Sulfur dioxide is produced when fossil fuels containing sulfur impurities are burned.

2. A great way to reduce acid rain is to produce energy without using fossil fuels. Instead, people can use renewable energy sources, such as solar and wind power. Renewable energy sources help reduce acid rain because they produce much less pollution.

3. The pH scale is logarithmic, meaning that an increase or decrease of an integer value changes the concentration by a tenfold. For example, a pH of 3 is ten times more acidic than a pH of 4.

A bus driver drove from Philadelphia to Washington DC. He drove the first 100km in 2 hours, the next 55km in 1 hour, and the final 75km in 2 hours. What is the average speek of the bus throughout the trip? a 77km/hr b 46km/hr c 81km/hr d 50km/hr

Answers

Answer:

b. 46 km/hr

Explanation:

Applying,

S' = d'/t'................... Equation 1

Where S' = Average speed of the bus, d' = Total distance covered by the bus, t' = Total time taken.

From the question,

d' = (100+55+75) km = 230 km

t' = (2+1+2) = 5 hours

Substitute these values into equation 1

S' = 230/5

S' = 46 km/hr.

Hence the correct option is b. 46 km/hr

The SI unit for pressure is the

Answers

Answer:

The SI unit of pressure is Pascal .

How could nanotechnology best be used to improve the treatment of cancer with chemotherapy?

A. A nanometer-size carrier could be designed to bring the chemotherapy drugs only to cancer cells.

B. A nano carbon wire could be designed that would aid in the manufacture of chemotherapy drugs.

C. A quantum dot could be used to watch where the chemotherapy drugs go in the body.

D. Biomaterials could be made that would allow for cell growth within the cancer cells so that they are easier to find.

Answers

Answer: A

Explanation: Edg2020

Elements in Group____are common alkaline earth metals.
Answer here

Answers

Answer:

Explanation:

k

Answer:

Explanation:

Group 2 consists of the elements in the second column. They all have a combining number (valence number) of 2+ after giving away 2 electrons.They start with Beryllium (element 4 in the periodic table)  and end with Radium (element 88 in the periodic table).

A 7.0 kg mass is lifted 4.0 m above the ground. Find the change in gravitational energy.

Answers

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the concept of Graviatoonal Energy.

P = mgh

hence,

E = (7)*(9.8)*(4) = 274.4 joules

==> Energy = 274.4 J

The mirror is a opaque object. When light hits the mirror, a small amount is reflected and converted to thermal energy, while most of the light waves are

1. absorbed
2. transmitted
3. reflected

Answers

Answer : All of the above

Answer:

3.When light incidents on a mirror  , the most of the light waves are reflected.

Explanation:

What is mirror ?Mirror is a simple device that reflects light. It is an opaque object.It allows reflection but also absorb some amount of light waves.It also convert small amount of reflected rays in thermal energy.

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3. A 40-gram ball of clay is dropped from a height, h, above a cup which is attached to a spring of spring force constant, k, of 25 N/m. The ball lands in the cup, and the spring compresses a distance, x. If x is 0.506 m, then what is the maximum speed of the ball?

Answers

Answer:

the maximum speed of the ball is 12.65 m/s

Explanation:

Given;

mass of the ball, m = 40 g = 0.04 kg

spring constant, k = 25 N/m

Apply the principle of conservation of energy;

The Elastic potential energy of the spring will be converted into Kinetic of the ball;

[tex]\frac{1}{2} kx^2 = \frac{1}{2} mv^2\\\\ kx^2 = mv^2\\\\v^2 = \frac{kx^2}{m} \\\\v = \sqrt{\frac{kx^2}{m}} \\\\v = \sqrt{\frac{(25)(0.506)^2}{0.04}} \\\\v = \sqrt{160.0225} \\\\v = 12.65 \ m/s[/tex]

Therefore, the maximum speed of the ball is 12.65 m/s

Direction: Write TRUE if the statement is correct, and FALSE if it is not
correct

3. When light strikes a black surface, it is reflected by the surface and
nothing is absorbed.
4. Mirrors are used in telescopes because they have the ability to reflect
5. Transmission in the passing of light through some materials​

Answers

-----------------------------------------------------------------------------------------------------------------

When light strikes a black surface, it is reflected by the surface and

nothing is absorbed    This would be False because black absorbs the light not reflect

Mirrors are used in telescopes because they have the ability to reflect

True? Telescopes designed with mirrors avoid the problems of refracting telescopes. Because the light is reflected from the front surface only, flaws and bubbles within the glass do not affect the path of the light

Transmission in the passing of light through some materials​

False? Some materials allow much of the light that falls on them to be transmitted through the material without being reflected. Materials that allow the transmission of light waves through them are called optically transparent. ... Materials which do not allow the transmission of any light wave frequencies are called opaque.

Tell the difference between an internal and an external influence and give 1 examples of each.

Answers

Answer:

Si tienen diferencia

Explanation: Internas: Proviene de la herencia; el legado genético que las personas reciben de sus padres.

Externa: Provienen de las experiencias personales frente

al mundo exterior

A jet plane travels at 40.8 km at an average speed of 340 m/s calculate how long this journey took- giveyour answer to the nearest minute

Answers

Answer:

[tex]2\ \text{minutes}[/tex]

Explanation:

d = Distance traveled = 40.8 km

s = Speed of jet = 340 m/s

Time is given by

[tex]t=\dfrac{d}{s}[/tex]

[tex]\Rightarrow t=\dfrac{40.8\times 10^3}{340}[/tex]

[tex]\Rightarrow t=120\ \text{s}[/tex]

[tex]\Rightarrow t=\dfrac{120}{60}=2\ \text{minutes}[/tex]

The time taken to complete the journey is [tex]2\ \text{minutes}[/tex].

5. How do you represent the strength of a force in a free-body diagram?

Answers

You can represent these forces in a free-body diagram where we crush the book down to a point. You then position that tails of the force vectors on the point with the tips point in the direction of the interaction. The relative length of the arrows tells you about the relative strength of the forces.

have a nice day

how to calculate light year, minute and second?

Answers

Answer:

A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).

Explanation:

What is the efficiency of a car's engine when heat input is 400,000 joules and
the waste heat is 300,000 joules?
O A. 25%
B. 35%
O C. 75%
D. 85%

Answers

Either 25% or 75%. does it to how much is wasted or the difference in the input and waste?

Answer: A. 25%

Explanation: Ap3x

Si un conductor tiene una longitud de 4 metros y una sección de 2 mm^2 calcule su resistencia, si su coeficiente de resistividad es de 0.10(Ωmm^2/m)

Answers

Answer:

R = 0.2 Ω

Explanation:

Para aplicar el concepto de resistencia de un conductor electrico, consideramos la siguiente formula:

R = ρ . l / S

Donde l es la longitud del conductor

S la superficie

y ρ el coeficiente de resistividad

Primero necestiamos hacer ciertas conversiones:

ρ = 0.10 ×10⁻⁶ (Ω . m²/m)

S = 2 mm² → 2 ×10⁻⁶ m²

R = 0.10 ×10⁻⁶ (Ω . m²/m) . 4m / 2 ×10⁻⁶ m²

Dentro de la formula simplificamos las unidades, los metros de ρ con la longitud y ambos m². De esa forma la unidad de R queda en Ω (ohmios).

Resolvemos:

R = 0.10 ×10⁻⁶ Ω . 4 / 2 ×10⁻⁶

R = 0.2 Ω

(please help asap 15 points) Ocean tides are created by...
the spinning of the Earth
heating of the water from
the Sun gravitational pull from the moon and Sun
All of the Above

Answers

all of the above..........
It’s all the above lol

True or False. Can Metalloids conduct electricity under certain conditions?

Answers

can metalloids conduct electricity under certain conditions?

true

A force of 20 newtons is used to much a box a distance of 2 meters. How much work was done?

Answers

Answer:

40 J

Explanation:

In the case of a rectilinear movement, the work is calculated as the product of Force (N) * movement (m). In your case, unless the angle between the force vector and the displacement vector is different from 0, the work is:

20 N * 2 m = 40 J

Dos masas con valores de 8kg y 12kg cada una se encuentran separadas por una distancia de 1m. Determinar la fuerza de atraccion gravitacional entre ellas si se compara con el valor de sus pesos Como es este valor?

Answers

The question is: Two masses with values ​​of 8kg and 12kg each are separated by a distance of 1m. Determine the force of gravitational attraction between them if compared with the value of their weights. What is this value?

Answer: The force of gravitational attraction between them if compared with the value of their weights is [tex]640.704 \times 10^{-11} N[/tex].

Explanation:

Given: [tex]m_{1}[/tex] = 8 kg,       [tex]m_{2}[/tex] = 12 kg

Distance = 1 m

Formula used is as follows.

[tex]F = \frac{G \times m_{1} \times m_{2}}{r^{2}}[/tex]

where,

F = force of gravitational attraction

G = gravitational constant = [tex]6.674 \times 10^{-11} N m^{2}/kg^{2}[/tex]

[tex]m_{1}[/tex] = mass of object 1

[tex]m_{2}[/tex] = mass of object 2

r = distance between the centers of these two objects

Substitute the values into above formula as follows.

[tex]F = \frac{G \times m_{1} \times m_{2}}{r^{2}}\\= \frac{6.674 \times 10^{-11} Nm^{2}/kg^{2} \times 8 kg \times 12 kg}{(1 m)^{2}}\\= 640.704 \times 10^{-11} N[/tex]

Thus, we can conclude that the force of gravitational attraction between them if compared with the value of their weights is [tex]640.704 \times 10^{-11} N[/tex].

PLEASE HELP THIS IS BIG. ITS 2ND GRADE WORK BTW. HELP FOR CROWN AND POINTS!!!!

What did Ben Franklin show with his famous kite experiment?
that lightning is electricity
how sounds could be recorded
that electromagnetic waves could be found and turned into sound energy
how to create a battery

Answers

Answer:

your answer is A

Explanation:

brainliest plzzzz

Answer:

c is the correct answer

Assignment
S
of
write the Symbol
Told, mercury and
Cooper, Iron,
Lead

Answers

Answer:

Check explanation

Explanation:

Gold - Au (Aurum)

Mercury - Hg (Hydrargyrum)

Copper - Cu (Cuprum)

Iron - Fe (Ferrum)

Lead - Pb (Plumbum)

These elements in the periodic table are some of the elements represented by letters not in line with their names.

This is because, these elements were known in ancient times and therefore, they are represented by letters from their ancient names.

Which of the following settings describes a displacement vs. time graph that
looks like this?
Displacement
Time
Check all that apply
O A. Constant velocity
OB. Increasing velocity
I C. Zero acceleration
O D. Decreasing acceleration
I NEED HELP ASAP

Answers

Answer:

c and a

Explanation:

ape x

A 450.0N force is applied for 9.90s, what is the momentum?

Answers

Answer:

Momentum = 4455 Ns

Explanation:

Given the following data;

Force = 450 N

Time = 9.9 seconds

To find the momentum;

According to Newton's second law of motion in terms of momentum states that the net force acting on an object is equal to change in momentum divided by time.

Mathematically, it is given by the formula;

Net Force = change in momentum/time

Momentum = force * time

Substituting into the formula, we have;

Momentum = 450 * 9.9

Momentum = 4455 Ns

Please dont delete this question......

Answers

Answer:

c

Explanation:

Answer:

C.

Explanation:

Standing on the surface of the earth you have a weight of 100 N. If you were to travel until you were 2
earth radii above the surface of the earth your weight would be?
b.) 11 N
c.) 25N
d.) 50 N
e.) about 100N
a.) 0N

Answers

Answer:

E

Explanation:

Which of the following could be included in your gamer's creed that would help keep gamers safe?
A. I will work hard and play harder. Games are my life.
B. I will use privacy features that gaming sites provide to ensure I do not share personal information with strangers.
C. I will do whatever I can to win games I play online.
D. I will share the game equally with my friends and family.
swered

Answers

Answer:

The answer is B. I will use privacy features that gaming sites provide to ensure I do not share personal information with strangers.

Explanation:

It keeps you safe online

Answer: the answer is b

Explanation:

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Georgia's white primary was made illegal in 1945, making it possible for African Americans to participate in the 1946 governor's race. Despite this fact, whywas the outcome of the election still considered a step backwards for the Civil Rights Movement? Which of the following indicates that a chemical equation is balanced?a. The numbers of atoms of each element are the same on both sides of the equation.b. All of the coefficients are the same.C. The numbers of molecules on each side of the equation are equal.d. The sums of the coefficients on each side of the equation are equal. A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The premium antifreeze solution contains 70% pure antifreeze. The company wants to obtain 140 gallons of a mixture that contains 20% pure antifreeze. How many gallons of water and how many gallons of the premium antifreeze solution must be mixed Someone plz help me I beg u plz I need this Ill really appreciate it how have advancements in science and technology changed the modern world?? Which is the best definition of the term literary genre?a classification or category of writing with a set of shared featuresa form of fiction writing that explores people's fears about the futurea type of writing that explores people's fearsa style of writing authored by serious writers x/15=5whats the value of x? Who sent the message "Anything you want, anytime you need it" to computers and reporters across the country? Christoph Ferstad Christophs friend Martine the company Anytime the company Amazonif u need the story please tell me ill mark u as brainlest!!!!please hurry How can you improve your self-esteem?By challenging your negative self-beliefsOB. By practicing a musical instrumentYou can't you are bom with a certain natural level of self-esteem that you can't changeOD. By watching videos of yourself Will give brainlest 100 points I would ask a question but half the mfkas on here have failed me so many tests. So I j want to let you guys know that you all are r e t a r t e d. hi! please help ill give brainliest Points on a tuesday, A game has 50 cards with 10 each numbered 1 to 5,and a player must draw a 2 or a 3 to move out of the "start" position. What is the value of x.Will mark Brainlyist if its the correct answer. Please help! Which impact of global warming has the greatest effect on drinking water supplies?A.melting mountain glaciersB.rising sea levelC.higher acid levels in the oceanD.early spring blooming of flowers The total pressure in a tank is filled with a mixture of gases : Oxygen, Helium, and Argon is 15.3 atm. The P(He) = 3.2 atm, P(O) = 7.4 atm, what is the P(Ar) in the tank? Put these numbers in smallest to largest Find the area of that with explanations thanks if you invest $1600 at 5.25% for 18 months, how much simple interest is earned?